We brought my brother in-law to stay with us a while because of health challenges. He is staying in the basement which year round averages 67 degrees. Since he is 80 my wife said turn up the heat downstairs. So I crank up the gas fireplace to make the room about 74 degrees. Did a test to see if the heat affected the cars. I put a few urethane shod cars on the track and they were running slower and slippery. So I said lets use the clock. The #7 Alfa Romeo on QuickSlicks ran similar times as when it was in the cool 67 degrees. The #26 Alfa on Yellow Dogs was consistently slower by 4-5 secs. The VW on QuickSlicks was about .96 secs off its fastest time.
Has anyone else experienced this falloff with urethane tires if the room temperature increases? Now I know some would say running the YD behind the silicone tires may or may not cause the drop off.
I got the fastest time for the Yellow Dog Alfa after running the QS Alfa so at 67 degrees it didn't seem to matter. but 4-5 secs seems to be a big drop.
Has anyone else experienced this falloff with urethane tires if the room temperature increases? Now I know some would say running the YD behind the silicone tires may or may not cause the drop off.
I got the fastest time for the Yellow Dog Alfa after running the QS Alfa so at 67 degrees it didn't seem to matter. but 4-5 secs seems to be a big drop.

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